Problems

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Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
0-1 Sequences 1464 294 20% 0.01 354 207 58% 6.7
10 Kinds of People 2658 561 21% 0.01 471 314 67% 5.6
2048 2694 1363 51% 0.00 1361 1169 86% 2.2
3D Printer 111 30 27% 0.00 37 24 65% 5.9
3-Sided Dice 594 43 7% 0.00 114 36 32% 8.8
4 thought 2230 768 34% 0.00 771 639 83% 2.8
A1 Paper 1624 501 31% 0.00 492 386 78% 3.6
Aaah! 8949 4399 49% 0.00 3749 3506 94% 1.4
ABC 1254 626 50% 0.00 619 566 91% 1.6
A+B Problem 1791 195 11% 0.06 307 111 36% 8.4
Absurdistan Roads II 403 145 36% 0.00 132 90 68% 6.5
Absurdistan Roads III 835 218 26% 0.04 204 149 73% 5.9
A Classy Problem 2182 623 29% 0.02 571 461 81% 3.7
ACM Contest Scoring 2245 1404 63% 0.00 1256 1195 95% 1.4
Adding Words 2678 538 20% 0.00 653 454 70% 4.7
A Different List Game 3449 253 7% 0.00 409 70 17% 9.2
A Different Problem 10587 4331 41% 0.00 4005 3470 87% 2.2
Adjoin the Networks 672 202 30% 0.00 180 132 73% 6.2
Administrative Difficulties 331 80 24% 0.05 95 64 67% 5.2
Adventures in Moving -- Part IV 403 129 32% 0.00 125 106 85% 4.7
A Favourable Ending 407 72 18% 0.01 114 64 56% 6.4
A Feast For Cats 535 180 34% 0.56 146 121 83% 4.4
Air Conditioned Minions 1600 440 28% 0.00 485 354 73% 4.4
Airline Hub 963 184 19% 0.01 183 111 61% 5.9
Airport Construction 820 69 8% 0.05 81 41 51% 7.8
Airport Logistics 29 6 21% 0.00 9 6 67% 7.2
Airports 104 32 31% 0.23 29 21 72% 6.9
Akcija 1335 588 44% 0.01 557 481 86% 2.3
Aladin 584 49 8% 0.17 84 14 17% 8.7
Alchemy 31 8 26% 0.03 17 8 47% 8.0
Alea iacta est 21 11 52% 0.47 10 10 100% 4.6
Alien Numbers 827 432 52% 0.00 421 385 91% 1.8
A List Game 2974 863 29% 0.00 826 676 82% 3.2
All about that base 1520 543 36% 0.00 598 491 82% 2.9
All Different Directions 242 124 51% 0.00 127 112 88% 2.5
Allergy Test 142 52 37% 0.00 32 18 56% 6.9
All Friends 416 78 19% 0.01 63 38 60% 8.2
All Just A Dream 502 108 22% 0.19 90 62 69% 6.9
All Pairs Shortest Path 2015 370 18% 0.04 272 174 64% 6.6
Almost Perfect 1729 422 24% 0.00 456 351 77% 3.3
Almost Union-Find 2591 326 13% 0.03 421 187 44% 7.8
Alphabet Spam 2480 1642 66% 0.00 1084 1043 96% 1.4
Alternative Bracket Notation 155 66 43% 0.00 69 59 86% 5.3
Amalgamated Artichokes 2070 908 44% 0.01 815 716 88% 2.4
Amanda Lounges 668 146 22% 0.07 159 113 71% 6.3
Amazing Race 185 50 27% 0.54 54 39 72% 6.2
Ambiguous Result 96 28 29% 0.04 37 27 73% 6.5
Anagram Counting 888 366 41% 0.00 366 302 83% 2.9
Andrew the Ant 40 14 35% 0.10 17 14 82% 5.1
Androids 211 81 38% 0.09 88 64 73% 3.5
A New Alphabet 3910 1787 46% 0.00 1745 1626 93% 1.5
Animal Classification 899 170 19% 0.04 183 114 62% 7.0
An Industrial Spy 716 391 55% 0.02 296 259 88% 3.1
Another Brick in the Wall 754 407 54% 0.00 407 366 90% 2.0
Another Candies 3183 851 27% 0.00 900 728 81% 3.0
Another Dice Game 55 39 71% 0.00 35 33 94% 3.6
Anthony and Cora 216 55 25% 0.01 80 50 62% 5.0
Antiarithmetic? 490 104 21% 0.18 141 86 61% 6.6
Ants 1002 387 39% 0.01 338 283 84% 3.0
Apaxiaaaaaaaaaaaans! 3504 2167 62% 0.00 1981 1891 95% 1.4
Apparatus 446 104 23% 0.01 84 62 74% 5.5
Apple Market 238 48 20% 0.19 56 25 45% 8.1
Apples, Cherries, and Mangos 221 70 32% 0.02 65 52 80% 6.1
Aquarium Tank 189 54 29% 0.00 56 42 75% 5.2
Aqueduct Construction 53 12 23% 0.01 14 11 79% 7.2
Arable Area 180 32 18% 0.08 39 22 56% 7.9
A Rational Sequence 581 226 39% 0.00 224 186 83% 3.8
A Rational Sequence 2 334 249 75% 0.00 248 241 97% 1.5
Arbitrage? 361 77 21% 0.05 63 49 78% 5.2
Arcade! 713 117 16% 0.01 120 84 70% 5.8
Arctic Network 729 265 36% 0.02 205 174 85% 4.1
A Real Challenge 2161 1069 49% 0.00 1039 983 95% 1.4
Area of Effect 78 8 10% 4.74 13 6 46% 7.8
Arithmetic 552 114 21% 0.01 140 88 63% 5.5
Army Strength (Easy) 1366 725 53% 0.00 618 563 91% 1.8
Army Strength (Hard) 1577 766 49% 0.01 544 476 88% 2.5
Around and Around We Go 8 2 25% 0.00 4 2 50% 8.5
Around the Track 168 26 15% 0.00 38 18 47% 8.4
Arranging Hat 102 48 47% 0.10 47 41 87% 3.9
Artur 138 24 17% 0.17 30 19 63% 6.0
Artwork 367 122 33% 0.07 137 84 61% 5.9
A Safe Bet 133 46 35% 0.27 39 33 85% 5.1
ASCII Figure Rotation 722 201 28% 0.00 223 182 82% 4.1
As Easy as CAB 156 34 22% 0.00 34 24 71% 6.5
Aspen Avenue 604 228 38% 0.01 142 104 73% 6.2
Assembly Line 25 10 40% 0.68 12 8 67% 7.1
Assigning Workstations 631 206 33% 0.12 209 166 79% 4.5
Association for Computing Machinery 1006 405 40% 0.00 393 342 87% 2.0
Association for Control Over Minds 606 209 34% 0.08 203 173 85% 3.6
Association for Convex Main Office 382 96 25% 0.08 96 77 80% 5.9
Association for Cool Machineries (Part 1) 497 99 20% 0.04 129 84 65% 6.6
Association for Cool Machineries (Part 2) 32 20 62% 0.00 20 18 90% 4.1
Association for the Country of Mububa 969 222 23% 0.00 255 169 66% 5.7
Association of Camera Makers 105 5 5% 10.56 8 5 62% 8.4
Association of Cats and Magical Lights 1008 226 22% 0.23 201 154 77% 5.0
Association of Computer Maintenance 658 84 13% 0.04 73 43 59% 7.9
Asteroid Rangers 61 32 52% 0.10 23 22 96% 4.5
Asteroids 450 81 18% 0.00 50 41 82% 4.7
A Towering Problem 710 378 53% 0.00 378 341 90% 2.0
Automatic Trading 251 69 27% 0.05 79 53 67% 4.7